/* ============================================================
       ARUS — halaman studi kasus ("lembar pelabuhan")
       Satu kolom baca dengan sungai di sisi kiri (data-layout="gutter"
       pada #chart; digambar assets/arus.js). Dimuat setelah qmt.css
       dan arus.css; menimpa komponen detil lama seperlunya.
       Tanpa box-shadow dan tanpa gradasi, sama seperti beranda.
       ============================================================ */
    .chart[data-layout="gutter"] .container { padding-left: var(--gutter); }
    @media (min-width: 900px) { .chart[data-layout="gutter"] { --gutter: 112px; } }

    /* ---------- Kepala lembar ---------- */
    .sheet-head { position: relative; z-index: 1; padding: clamp(112px, 14vh, 168px) 0 clamp(28px, 4vw, 48px); }
    .sheet-head .back-link { text-transform: none; letter-spacing: 0.04em; color: var(--teal); }
    .sheet-head .back-link:hover { color: var(--oranye-text); }
    .sheet-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; margin-top: 22px; }
    .sheet-meta .kml b { color: var(--ink); font-weight: 700; }
    .sheet-title { font-size: clamp(44px, 8vw, 96px); line-height: 0.95; margin-top: 12px; }
    .sheet-sub { margin-top: 22px; max-width: 46ch; color: var(--ink-soft); font-size: clamp(17px, 2vw, 21px); line-height: 1.5; }
    .sheet-sub b { color: var(--ink); }

    /* spesifikasi: legenda peta, bukan tabel berkotak */
    .sheet-head .spec { gap: 18px 28px; margin-top: 44px; background: none; border: 0; border-radius: 0; overflow: visible; }
    .sheet-head .spec > div { background: none; padding: 14px 0 0; border-top: 1.5px solid var(--teal); }
    .sheet-head .spec dt { font-size: 12px; letter-spacing: 0.03em; text-transform: none; color: var(--teal); }

    /* ---------- Ruas isi ---------- */
    .sheet-reach { padding: clamp(44px, 6vw, 80px) 0 clamp(12px, 2vw, 24px); }
    .sheet-reach h2.serif { font-size: clamp(30px, 4vw, 52px); }

    /* ringkasan */
    .summary { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr); gap: clamp(28px, 4vw, 64px); align-items: start; }
    .summary .lede { margin-top: 16px; max-width: 54ch; color: var(--ink-soft); }
    .summary .lede b { color: var(--ink); }
    .tally { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px 20px; margin: 28px 0; padding: 20px 0; border-block: 1px solid rgba(13, 33, 40, 0.16); }
    .tally li { display: grid; gap: 8px; align-content: start; }
    .tally .s-num { font-size: clamp(34px, 3.6vw, 50px); min-width: 0; }
    .tally .s-lbl { max-width: none; }
    .summary .cta-row { margin-top: 24px; }
    .sheet-note { margin-top: 16px; max-width: 62ch; font-size: 13.5px; line-height: 1.55; color: var(--ink-mute); }
    .summary-media { display: grid; gap: 18px; }
    .plate { margin: 0; }
    .plate-img { overflow: hidden; background: var(--ink); border: 1.5px solid var(--teal); border-radius: 6px; }
    .plate-img img { display: block; width: 100%; height: auto; }
    .plate figcaption { margin-top: 10px; font-family: var(--f-mono); font-size: 12px; letter-spacing: 0.03em; color: var(--ink-soft); }

    /* rincian */
    .sheet-reach .dossier h2.serif, .sheet-reach .dossier h3.dh.serif {
      font-size: clamp(28px, 3.4vw, 44px); line-height: 1.06; letter-spacing: -0.012em; margin: 0 0 20px;
    }
    .sheet-reach .dossier-list li::before { top: 11px; height: 2px; background: var(--teal); }
    .sheet-reach .dossier-list li b { color: var(--ink); }
    .sheet-reach .dossier-aside { border-left: 1px solid var(--teal); }
    @media (max-width: 860px) { .sheet-reach .dossier-aside { border-left: 0; border-top: 1px solid var(--teal); } }
    .sheet-reach .dossier-aside a { text-decoration: underline; text-underline-offset: 3px; }

    /* galeri antarmuka */
    .sheet-reach .shots-label { font-size: 12px; text-transform: none; letter-spacing: 0.03em; border-bottom-color: rgba(13, 33, 40, 0.16); }
    .sheet-reach .shots-label .lead { color: var(--teal); }
    .sheet-reach .browser-win { border-color: var(--teal); }

    /* ---------- Muara: ajakan ---------- */
    .sheet-muara { padding-bottom: clamp(88px, 10vw, 140px); }
    .sheet-muara h2 { font-size: clamp(34px, 4.8vw, 66px); max-width: 20ch; }
    .sheet-muara .muara-lede { max-width: 48ch; }
    .sheet-muara .cta-row { margin-top: 30px; }

    @media (max-width: 1199px) { .tally { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
    @media (max-width: 899px) { .summary { grid-template-columns: 1fr; } }